remove items from a javascript array without generating memory garbage.

Despite there being a number of "remove array items" in npm, I couldn't find satisfying all criteria:

• doesn't generate garbage
• performs similar or better to the native array.splice
• has tests
• es3+ compatible
• works in both commonjs (node) and es modules (import)

so here we are.

originally inspired by https://gamealchemist.wordpress.com/2013/05/01/lets-get-those-javascript-arrays-to-work-fast/

(which is a gold mine for performant, non-garbage generating array operations by the way.)

removeItems(arr, startIdx, removeCount)

const removeItems = require('remove-array-items')

const arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]

removeItems(arr, 3, 4)  // after running, arr === [ 1, 2, 3, 8, 9 ]

import removeItems from 'remove-array-items'

const arr = [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ]

removeItems(arr, 3, 4)  // after running, arr === [ 1, 2, 3, 8, 9 ]